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This product bulletin specifies the software feature sets available for Cisco® 3800 Series Integrated Services Routers with Cisco IOS® Software Release 15.0. It also issues recommendations for flash and DRAM memory configuration.

Note: This product bulletin covers the Cisco IOS Software Release model changes from Cisco IOS Software Releases 12.4 Mainline and 12.4T for the Cisco 3800 Series Integrated Services Routers. It does not cover individual new features. For information about new features in Cisco IOS Software Release 15.0, refer to the Cisco IOS Software pages at Cisco.com.

Unlike the traditional Cisco IOS Software M and T releases, Cisco IOS Software Release 15.0 does not diverge into separate M and T software release trains. Beginning with 15.0, new releases will be available 2 to 3 times per year, delivered sequentially from a single software train. Extended Maintenance (EM) releases will be available approximately every 20 months. Standard maintenance T releases enable faster Cisco feature delivery before the next EM release becomes available.

The remainder of this product bulletin provides details about Cisco IOS Software Release 15.0 availability for the Cisco 3800 Series routers and the associated flash and DRAM memory requirements.

Table 1 lists the Cisco IOS Software Release 15.0 feature sets that are available for the Cisco 3825 Integrated Services Router. Note that the flash memory recommendations given in the table are calculated without added management tools such as Cisco Configuration Professional. For more feature details refer to the data sheet for the Cisco 3825 Integrated Services Routers at:
http://www.cisco.com/en/US/products/ps5857/index.html and the data sheet for the Cisco 3845 Integrated Services Router at: http://www.cisco.com/en/US/products/ps5856/index.html.

Table 2 lists the Cisco IOS Software Release 15.0 feature sets that are available for the Cisco 3845 Integrated Services Routers. Note that the flash memory recommendations given in the table are calculated without added management tools such as Cisco Configuration Professional.

For Cisco IOS Software Release 15.0, the cross-platform feature sets remain the same as those for Cisco IOS Software Releases 12.4 Mainline and 12.4T. These cross-platform feature sets simplify the image selection process by providing similar functions across platform boundaries.